2 layers80 × 150 mm
Stepper mouse-2025b
daisuke-ym/micro-mouse
[^1]: Unistep2 ライブラリを用いてほぼ最高速度で回しても約15rpmなので、 1区画進むのに約4秒かかります。 大会では16x16区画、256区画あるので、全探索するのに15分以上かかるため、 偶然を除いて競技時間10分以内に完走することは不可能です。
108 parts
2 layers100 × 100 mm
Speedometer
greentea-ssl/speedometer_pcb- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 53
- Nets
- 59
- Pads
- 165
- Tracks, vias
- 369, 17
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 26 Apr 2025
- Updated
- 26 Apr 2025
Overview
Speedometer is an open-source printed circuit board by greentea-ssl, from the greentea-ssl/speedometer_pcb repository on GitHub. It is a 2-layer board of 100 × 100 mm with 53 parts on 59 nets, routed with 369 tracks and 17 vias.
It is built around the MMBT3904, TMBT3906,LM and L-51ROPT1D1, with the SSM3J332R,LF among its other parts. Its parts include 21 resistors, 9 transistors, 4 diodes, 4 connectors and 2 ICs. It belongs with the RP2040 boards of this library.
Main components
4
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)TMBT3906,LM
SOT-231 PNP 100 100nA 150mA 1W 250MHz 400mV 50V 5V PNP SOT-23 Bipolar (BJT) ROHSToshibaBipolar (BJT)
L-51ROPT1D1
插件,D=5mm-35℃~+85℃ 1.2mA 100nA 10mW 30V 940nm NPN 插件,D=5mm Phototransistors ROHSPARALIGHTPhototransistors
SSM3J332R,LF
SOT-23F1 P-Channel 1.2V 144mΩ@1.8V 1W 30V 560pF 65pF 6A 8.2nC@4.5V 80pF P-Channel SOT-23F MOSFETs ROHSToshibaMOSFETs
README
README.mdspeedometer
Parts
53| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R4, R5, R6, R9, R10, R11 |
| 8 | 200R | Resistor_SMD:R_0603_1608Metric | R14, R15, R16, R17, R18, R19, R20, R21 |
| 8 | MountingHole | myLib:MountingHole_3.2mm_M3_noResist | H1, H2, H3, H4, H5, H6, H7, H8 |
| 4 | Conn_01x03 | Connector_JST:JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal | J1, J2, J3, J4 |
| 3 | 470R | Resistor_SMD:R_0603_1608Metric | R3, R7, R8 |
| 3 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3, Q4 |
| 3 | TMBT3906 | Package_TO_SOT_SMD:SOT-23 | Q6, Q7, Q9 |
| 2 | 750k | Resistor_SMD:R_0603_1608Metric | R12, R13 |
| 2 | Battery_Cell | speedometer:AA-Battery | BT1, BT2 |
| 2 | L-51ROPT1D1 | LED_THT:LED_D5.0mm_IRBlack | Q5, Q8 |
| 2 | LED | LED_THT:LED_D5.0mm_IRGrey | D2, D3 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm | BZ1 |
| 1 | D_Small | Diode_SMD:D_0603_1608Metric | D4 |
| 1 | D_Small | Diode_SMD:D_SOD-123 | D1 |
| 1 | OSL30561-IRA | speedometer:OSL30561-IRA | U2 |
| 1 | RESET_SW | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW2 |
| 1 | RaspberryPi-Pico | speedometer:RaspberryPi-Pico | U1 |
| 1 | SSM3J332R | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW1 |
Questions
How big is the Speedometer PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Speedometer use?
53 parts, built around the MMBT3904, TMBT3906,LM, L-51ROPT1D1 and SSM3J332R,LF. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Speedometer KiCad files?
From the greentea-ssl/speedometer_pcb repository on GitHub, at the commit this page was made from: the board is speedometer.kicad_pcb and its schematic speedometer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Speedometer design in my own project?
Its repository states no licence, so its author keeps all rights: ask greentea-ssl before reusing the design.
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